Demountable rim



J. T. CLARK.

DEMOUNTABLE RIM.

APPHCATION FILED MAY 10, 1922.

l 5429,90 1 a Patented p 19, 1922.

INVENTOR A TTORNEY Fatented Sept. 19, i922.

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JOHN '1. CLARK, OF PRO'VO, UTAH.

DEMOUNTABLE RITE.

Application filed May 10,

To all whom it may concern.

Be it known that 1, JOHN T. CLARK, a citizen or" the United States,residing at Provo, in the county of Utah and State of Utah, haveinvented certain new and useful Improvements in Demountable Rims, ofwhich the "following is a specification.

My invention relates to rims "for pneumatic tires for vehicles and hasfor its object to provide a demountable rim for wheels, such asautomobile wheels, by a tire which is easily and quickly taken off andput on, and which will hold said tire firmly in place when inflated.

These and other objects which will be ap parent, I accomplish with thedevice illustrated in the accompanying drawings in which similar lettersand numerals of reference indicate like parts throughout the severalviews and as described in the specification forming a part of thisapplication and pointed out in the appended claim.

In the drawings in which I have shown a substantial embodiment of myinvention, Figure 1 is a side elevation of a tire in place on a rimconstructed under my invention. Figure 2 is a transverse section on line2-2 of igure 1. Figure 3 is a side elevation oi my invention. Figure lis a view in perspective of a section of an automobile tire and of mydevice in place therein.

The present invention consists of a metal rim A. cut into three sectionsequal in length with transverse abutting ends. lhe edges 0t said rim areoutwardly flanged, as at l, with the inner face 2 of each flange cut atan angle of about d5 from the bottom oi'" the channel ot the rim. Twoannular rings are carried within the channel or said rim, and aninwardly curved flange or gripping element 3 forms a portion of eachring R, which curved portion is engaged with the head of a tire. Theinner corner of the outer face of each of said rings is tor-med toconform with the angled :tace 2 01 said rim and is intended to coactwith said ta -e 2 in preveiring the edges of a tire from separatin wheninflated. A fastening plate C is detachably held at the unctions of .drim 5., each of said plates consisting of thin that metal platelongitudinally curved to conform with the inner face of said rim. Eachof said plates has two spaced apart holes 4 therein, and each of saidholes is 1922. Serial no. 559,840.

connected with a slot 5 having its inner edge or corner beveled. Rivets6 having flat heads with conically shaped inner faces on the heads aresecured in the end portions oi each of said rim sections with a portionof each of said rivets protruding radially inward from the bottom of thechannel in said rim, and the fastening plates are socured in place onthe inner face of said rim by passing the holes 4: in said plates overthe extending portions of said rivets and then sliding said platestransversely as to said rim to engage the protruding end portion 01 eachrivet in its respective slot 5, thereby fastening the sections of therim together within the said rings B.

In using my rim i remove two of said plates 0 by sliding each platelaterally on the shank of the rivets 6 until the heads of the rivets arewithin their holes The plates may then be moved radially toward the axisor the rim, and the tree end of one of said segments of the rim may bemoved toward tne axis of the rim, and all 01 the rim removed from therings B. To place my rim within a tire the edges of the tire are engagedwithin the flanged portion 23 of each of said rings. Then by moving theedges of the tire toward each other the segments of the rim are placedwithin the rings ii and expanded to form a circle. T he ttastener platesare then placed over the rivets e within the end portion of each rimction and driven laterally until said .cts are engaged in the slots andwhen the tire is ini iated the edges o'li e30 tire will press the saidrings away from each other and in turn the said rings will contact withthe outwardly extending flange l ot the rim.

Having thus described my invention I de sire to secure by Letters Patentand claim in a demountable Til" the combination oi? two annular ha ncoacting tire engaging portions, a sectioned rim with outwardly amendedflanges on each edge within said rings; rivets near each end of eaci section of said rim, with portions radially extended; and fastening platesspanning the ends oi said rim sections having slotted holes in each toengage the extended portions oi said rivets.

In testimony whereof I have affixed my signature.

JOHN T. CLARK.

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